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Old 04-08-2011, 01:52 PM   #1
noir911
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Registered: Apr 2004
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Tools to detect live ethernet interface


The servers I configure have around 10 ethernet interfaces (eth0 - eth9). Some are live and some are dead so if I configure IP address on a dead interface there will be no network connectivity. Is there a tool to detect which interfaces are alive or dead? This is easy on Windows - the dead interfaces have a red cross ("x") beside them. How about Linux?

Thanks.
 
Old 04-08-2011, 01:56 PM   #2
orgcandman
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Registered: May 2002
Location: new hampshire
Distribution: Fedora, RHEL
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If you're looking for link information, then provided the driver supports it, you can use ethtool.

ex:

Code:
aconole@6760HD1:~$ sudo ethtool eth0
...
	Link detected: yes
 
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